Please make sure you adhere to the policies on academic integrity.

1. (10 points)

   Write a program that allows the user to enter a nonnegative integer \(k\) and returns the sum of the first \(k\) perfect squares, $$\sum_1^k{k^2}.$$ For example, if \(k=4\) the sum should be \(1^2 + 2^2 + 3^2 + 4^2 = 1 + 4 + 9 + 16 = 30\). A sample execution might appear as

   Enter k: 4
   30

2. (10 points)

   Ask the user for a word and then output the following pattern.

   Enter word: example
   e
   ex
   exa
   exam
   examp
   exampl
   example